hid himself behind the door, from__________ he could hear the steps of his father clearly

Go anywhere in China on________ clear day inspringtime and you’re bound to see people flying ________kites It’s a favoriteoutdoor activity in China

I saw your uncle ______ a taxi to the airport. Why didn’t you drive him there— I would have, but my car _______.

_____ any change about the date，please tell me immediately.

Will books be on paper in 100 years—_______. They will be computers.